I don't know or care. If she does a good job representing her that is all that matters.
White people have played other races for years and I don't care about that either. It is acting, the whole point is pretending to be someone you aren't.
Isn't this where the trouble comes from though? This is now completely ideologically fraught.
I actually am ok with people acting. I am happy for people to change their hair colour, their accent, and as far as I am concerned they can change their skin colour. I am ok with Forest Whitaker using make up to change his skin colour, wearing a bald wig, and changing his accent to play Winston Churchill. (At least I am ok with him trying, whether he pulls it off would be a different story.)
I am also ok with white actors playing different races. I think the question of making sure non-white actors get roles is a different question that should be addressed separately, but ultimately I think it is good for actors if they can attempt any role they can play convincingly. To say this denigrates people in the sae way that racist depictions does is perfidious IMO.
I am also ok with race-blind casting, but I don't really enjoy it in naturalistic historical productions. And I think it can be used as a crutch in some instances which is not artistically great. But something like Troy - yes, that element worked for me, even if the rest was a dog's breakfast. And some people don't mind in historical dramas which is fine too - we don't all like the same things.
But - the current wisdom is against this. It says race is important, so important that we can't attempt this kind of cross race portrayal, it's offensive. People who disagree are told in no uncertain terms that they are wrong.
If people really believe that, then no wonder many aren't happy with race-blind casting in historical roles - it's fundamentally doing the same thing, saying that race isn't important in that sort of artistic depiction, it's all about the acting.
People get pissed off because it's clearly not artistic, it's political, and the principle applied depends on what people would like, not any kind of logical consistency.,